Glossary of Mining Terms RocksandMinerals com

Cast A directed throw in strip mining the overburden is cast from the coal to the Factor of safety The ratio of the ultimate breaking strength of the material to the force Such pressures may be great enough to cause rocks having a low nbsp

Dragline or Truck Shovel UNSW Engineering

applicable draglines are often applied to open cut coal mines Draglines are fluctuations over recent years which is the best option to plan for By modelling contractors mines are deeper more complex and operate at higher strip ratios nbsp

Mining Exxaro

conditions observed at site were very good Coal 5 3 1 Grootegeluk Mine Grootegeluk Mine is a large open pit truck and shovel mine in operation since The overall planned stripping ratio is 1 04 1 amounting to 4 6Mm3 of overburden

Surface Strip Coal Mining Handbook sacea

This handbook on surface strip coal mining serves as a general introduction to the subject of are not reflected to any great degree in this handbook rather the basic generic principles 1 3 PRODUCTION COST AND STRIPPING RATIO

Mine Plan Justification Whitehaven Coal

The purpose of this Mine Plan Justification document is to describe the process utilised by upon stripping ratio depth of coal coal quality proximity to infrastructure However although the nested pit shells are a good indicator of the mine

Stripping ratio Wikipedia

In mining stripping ratio or strip ratio refers to the ratio of the volume of overburden or waste material required to be handled in order to extract some tonnage of nbsp

Determining Stripping Ratio Basic Mining Techniques

4 Apr 2016 Stripping ratio simply refers to the amount of waste handled in order to recover certain amount of ore

Overburden Weighs On Wyoming Coal Producers Inside Energy

16 Oct 2015 How much coal does a Wyoming coal miner mine where Cloud Peak is moving its dragline has the highest ratio of dirt to coal in the basin

Cost Models of Theoretical Mining Operations CostMine

Surface underground mine cost models a variety of sizes types theoretical Mining Cost Service middot Mine and Mill Equipment Costs middot Equipment Cost Calculator middot Coal Cost 5 000 Tonne per Day Open Pit Mine Model Stripping Ratio 1 1 The models provide a great deal of important information about equipment labor nbsp

chidliak Strip Ratio

An example would be a strip ratio of 6 1 and a pure open pit cost of 4 tonne Strip itself is easily understood in coal mining where you may have 20 metres pit is still to be determined but a value of 220 metres is probably a good estimate

Rational economic stripping ratios

ABSTRACT The economic stripping ratio used to define an economic mining block in an open pit coal mining maintaining the in situ coal quality in the run of mine coal a would give management a great deal of foresight into their own

Stripping Ratios What are They and Why are They Important INN

27 Jun 2017 Stripping ratios aren 39 t often discussed but they can be an early and important indicator for mining projects Here 39 s what investors should know nbsp

Surface Coal Mining Methods in Australia InTechOpen

9 Mar 2012 operating at higher stripping ratios Westcott et al 2009 Initially open cut mines in coal mining was classified as strip mines where draglines A good example of this design is Mount Arthur North of BHP Billiton in the

Boikarabelo Coal Mine Resource Generation

The Boikarabelo coal seam is between 20 and 30 metres below the surface with an overburden strip ratio of 0 6 1 enabling low cost open cut mining EPC contractors with good track records and strong balance sheets against which there nbsp

stripping ratio mining Britannica com

great depths that it becomes uneconomical to continue with surface mining Stripping ratios can also consider the selling price of coal and a certain

Stripping Ratios Pit Limits amp Cutoff Grade Optimization

CHAPTER 8 Stripping Ratios Pit Limits amp Cutoff Grade Optimization Dr Teuku Andika R In strip coal mining operations the following are sometimes seen nbsp

24th clip Surface Mining Stripping Ratio YouTube

22 Nov 2016 Open Pit Coal Mine Duration 4 15 Jim How 283 558 views middot 4 15 middot What is STRIP MINING What does STRIP MINING mean STRIP MINING nbsp

1 4 Stripping Ratio Ratio Surface Mining Scribd

The various stripping ratios that are used in surface mining are the following 1 2 3 4 5 6 7 Break even stripping ratio BESR In case of coal deposits

Economic Surface Mining of Multiple Seams SAIMM

mUltiple sewn strip mining industry seems as favorable as Iltat predicted for the sense that good mining practice must be followed at all times This means that 39 Stripping ratio 39 as used here in reference to coal mining is de£ned as the nbsp

Surface Mining Techniques used in the Oil Sands Oil Sands

1 May 2016 Strip mining is the mining of a relatively flat deposit very close to the surface commonly used in coal or phosphate industries Optimal plant performance occurs somewhere in the middle ores with a good fraction of bitumen little clays Strip ratio is the fraction of overburden or waste ore versus the nbsp

Optimal production rates in opencast coal mining University of

15 Nov 2011 Optimal production rates in opencast coal mining A value driven approach Iwan de Jongh Thus by mining from a low saleable strip ratio to a higher strip ratio will generally 5 1 2 1 seam The best developed No

Coal Mining Terms Cline Mining Corporation

Large augers or remote controlled mine equipment bore into coal seams from The clean coal stripping ratio is more indicative of a mine 39 s performance as it nbsp

Estimating Average Total Cost of Open Pit Coal Mines in InfoMine

coal mines to guide mining project evaluation to find the ATC in open pit coal mines High stripping ratio seams with complex metallurgy characteristics mines located in mining project life however these equations are still one of the best nbsp

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